Mathematics High School

Tamara bought yarn for $39 and 2 pairs of knitting needles. Her total cost for the yarn and knitting needles was $69. Tamara writes an equation that represents the cost of each pair of knitting needles. If k represents the cost of each pair of knitting needles, which statements about verifying the value of k are true? Check all that apply.

0) Tamara should substitute k = 30 into the equation 39 + 2 k = 69
0) After she substitutes the correct value for k into the equation, Tamara should find that the left side of the equation is equal to the right side.
0) Tamara should substitute k = 15 into the equation 39 + 2 k = 69.
0) After she substitutes the correct value for k into the equation, Tamara should find that the left side of the equation is not equal to the right side.
0) To verify the solution to the equation, Tamara multiplies the solution by 2 and then adds it to 39. Then, she checks that it is equal to 69.
0) To verify the solution to the equation, Tamara adds the solution to 2 and then adds it to 69. Then, she checks that it is equal to 39.

Answers

Answer 1

Answer:

Tamara should substitute k = 30 into the equation 39 + 2 k = 69

Step-by-step explanation:

or you can do 69-39=30 so k=30

Answer 2

Answer:

A, C, F

Step-by-step explanation:

just trust me bruv.

Related Questions

A freshly cut Christmas tree is sold for $30. The tree is 6 feet tall. How much a foot is it for the tree?

Answers

Answer:

$5 a foot for the tree

How many solutions are there to the equation below?
7(x + 2) = 7x- 10
O AO
OB. 1
C. Infinitely many

Answers

There is C infinitely many solutions :)

Pls help me pls....
Choices are in the pic pls...
I’ll mark as Brainiest and that’s a promise

Answers

Answer:d would make the most sense :)

Step-by-step explanation:

What number is 10.5% of 65?

Answers

Answer:6.83

Step-by-step explanation:

Answer:

6.825

Step-by-step explanation:

100% is equal to 1.

So 10.5% is equal to 0.105.

Multiply by the percentage.

65 * 0.105 = 6.825

Solve for the value of p.
(8p+4)
54°

Answers

Answer:

p=-6 I hope I helped! Enjoy your day

please help me out i will mark brainliest!

Answers

Answer:

y=-x+2

x+y=2

Step-by-step explanation:

hopefully this helps :)

Answer:

y = -x + 2

x + y = 2

Step-by-step explanation:

y = mx + b

y = mx + 2 (0,2) (2,0)

[tex]\frac{2 - 0}{0 - 2}[/tex] = [tex]\frac{2}{-2}[/tex] = -1

y = -x + 2

Ax + By = C

y = -1x + 2

x + y = 2

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Answers

Answer:

18:12

Step-by-step explanation:

Answer:

answer is 18 divided by 12

Step-by-step explanation:

please mark brainliest

An iron ball has a density of 8 g/cm3.
The volume of the ball is 12 cm3.
What is the mass of the ball?

Answers

Answer:

Density = 0.8 g/cm 3, length = 30 cm, depth = 10 cm, height = 10 cm, mass = ?

Step-by-step explanation:

hope i helped

Please answer correctly will mark brainliest for correct answer and will follow - Thank you ;)

Answers

Answer:

Concept: Rectangular Figures

We want the perimeter, we are missing side AB We are told AB= CD+EF+GHHence: 2cm+2cm + 2 cm= 6 cm = ABHence: BC= 2+3+2=7 cm So we have everything we need: 6+7+2+2+2+3+2+2= 25 units

PLEASE HELP ME I NEED HELP

Answers

Answer:

the x-intercept is (-2,0) and the y-intercept is (4,0)

the slope (rise/run) is -1/2.

therefore the equation of the line is:

y=-1/2x+4

Answer:

y = 2/1x + 4

Step-by-step explanation:

The slope of line (m) is 2/1 and the y intercept is at 4 on y axis.

-9= x – 14 can someone help me please???

Answers

Answer:

x =5

Step-by-step explanation:

-9 = x -14

Add 14 to each side to get x by itself.

5 = x

You can rewrite it to get x in its standard form:

x = 5

Charles wants to compare the solutions to the equations x^2=64 and x^3=64.

Compare the signs of the solutions. Explain your reasoning.

Answers

Answer:

x = ±4

x = 4

Step-by-step explanation:

x² = 64.

Square root both sides

√x² =√64

x= ±8

When squaring both sides, the required solution is both positive and negative since the product of two negative number is positive.

x³ = 63.

Cube root both sides

3√x³ = 3√65

x =4

This only gives a positive number not negative since the product of three negative number gives a negative number

write a mathematical expression for the phrase 8 divided by x added to the absolute value of 5y

Answers

Answer:

|5y|+8/x

Step-by-step explanation:

The mathematical expression is |5y|+8/x

what is the solution to 9=n+3

Answers

Answer:

n=6

Step-by-step explanation:

3+6=9

6+3=9

9-6=3

9-3=6

so n=6

Brainliest plz UwU

Answer:

n=6

Step-by-step explanation:

9-3=6

n=1 so

9/n or 9/1 =

n=6

An object is moving at a speed of 7 meters every 9 days. Express this speed in centimeters per year. Round your answer to the nearest whole number.

Answers

Answer:

28400cm

Step-by-step explanation:

if 9 days=7m

:.365 days=?

365×7/9

283.88888

rounded off to nearest whole number =284m

change to cm=28400cm

The speed of the object expressed in centimeters per year and rounded to the nearest whole number is 28390 cm/yr

Speed per day = Distance / Number of days

Speed per day = 7 meters ÷ 9 days = 0.7778 m/day

Converting to centimeters per year :

1 meter = 100 cm1 day = 1/365 years

Hence,

0.7778 m/day = (0.7778 × 100cm) ÷ (1/365 years)

(0.7778 × 100cm) ÷ (1/365 years) = (77.78 cm ÷ 0.0027397 year)

0.7778 m/day = 28389.7 cm / year

Therefore, the speed of the object is 28390 cm/yr

Learn more : https://brainly.com/question/18796573

Which is not a type of proof?

Answers

The one that is not a type of proof has to be Descriptive Essay proof

3 Destiny draws a circle with radius 14 centimeters.
a. What is the circumference of Destiny's circle? Write your answer using TT.
Show your work.

Answers

Answer: 87.96

Step-by-step explanation:

C = (pie)d (d = diameter)

Please give brainliest

someone please give me the answers for this lol

Answers

Answer:

A is the correct answer.

Step-by-step explanation:

y and x meet on those numbers. And i did the test.

hope this helps

A is the answer for sure

A car travels 5.42 miles in an hour. If the car continues at the same speed for 17 hours, how many miles will it travel?

Answers

Answer:

37.94 miles

Step-by-step explanation:

5.42 x 17 =

37.94mi

three ratios that are equivalent to 16;12

Answers

Step-by-step explanation:

Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.

What are the zeros of f(x) = x^2-13x+40

Answers

Answer:

8 and 5

The roots (zeros) are the x values where the graph intersects the x-axis. To find the roots (zeros), replace y with 0 and solve for x

.Step-by-step explanation:

or you can plug the equation into ma th way (an AWESOME online math problem solver) and select the option "solve for roots (zeros)" or sometin like dat

Can someone please help me this problem? Thanks :)

Answers

Answer: B) 2/3

====================================================

Work Shown:

Method 1

Apply the slope formula

m = (y2-y1)/(x2 - x1)

m = (3-1)/(-1 - (-4)) ..... using the first two rows as points

m = (3-1)/(-1 + 4)

m = 2/3 is the slope

-----------------------------------

Method 2

Each time y goes up by 2, x goes up by 3.

For instance, the jump from y = 1 to y = 3 is "plus 2". At the same time, the jump from x = -4 to x = -1 is "plus 3".

We can then say

slope = (rise)/(run)

slope = (change in y)/(change in x)

slope = (y increase by 2)/(x increase by 3)

slope = 2/3

Find the height of the tree

Answers

Answer:

im guessing 15

Step-by-step explanation:

If CD=11 and C lies at -13, where could D be located?

Answers

Answer:

+2 ..? i'm not really sure

Step-by-step explanation:

I’m pretty sure it’s +2

A 6-foot tall observer casts a 3.5-foot shadow at the same time a silo casts a 49-foot shadow. How tall is the silo?

Answers

Answer:

about 28.8 ft.

Step-by-step explanation:

The bases of a trapezoid are 16.8 yards and 6.9 yards. If the height is 2 yards, what is the area of the
trapezoid?
47.4 yd 2
9.9 yd 2
23.7 yd 2
19.8 yd 2

Answers

Given:

Bases of a trapezoid are 16.8 yards and 6.9 yards.

The height is 2 yards.

To find:

The area of the trapezoid.

Solution:

We know that, area of a trapezoid is

[tex]Area=\dfrac{\text{Sum of bases}\times \text{Height}}{2}[/tex]

Using this formula, we get

[tex]Area=\dfrac{(16.8+6.9)\times 2}{2}[/tex]

[tex]Area=\dfrac{(23.7)\times 2}{2}[/tex]

[tex]Area=23.7\text{ yards}^2[/tex]

Therefore, the correct option is C.

Answer:

the answer is 19.8 yd 2

Step-by-step explanation:

is the assignment name is Area of triangles and parallelogram

22 = 3x - 10 and 23 = x + 30 x = [?]

Answers

Answer:

Step-by-step explanation:

Help please! ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

x= 1/2

and y=3

Step-by-step explanation:

Let's solve your system by substitution.

y=10x−2;2x+y=4

Step: Solvey=10x−2for y:

y=10x−2

Step: Substitute10x−2foryin2x+y=4:

2x+y=4

2x+10x−2=4

12x−2=4(Simplify both sides of the equation)

12x−2+2=4+2(Add 2 to both sides)

12x=6

12x

(Divide both sides by 12)

Step: Substitute

forxiny=10x−2:

y=10x−2

y=10(

)−2

y=3(Simplify both sides of the equation)

Answer:

x= 1 /2

and y

help me on this plzzz its timed

Answers

Your answer is 1880000

Which is a unit rate?

Answers

Answer:

A unit rate is a rate where the second quantity is one unit , such as $34 per pound, 25 miles per hour, 15 Indian Rupees per Brazilian Real, etc. 1 minute=60 seconds1 hour=60 minutes (or) 3600 seconds1 day=24 hours (or) 1440 minutes.

Step-by-step explanation:

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